<html lang="en" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/extras/spring-security">
<body>
    <h1>用户登录</h1>
    <form method="post" th:action="@{/hello-world}">
        <button type="submit">登录</button>
    </form>
</body>
</html>